CODEWITHSUNDEEP
c++qtqt4
Dinar Abdullin
Dinar Abdullin

Reputation: 165

Connecting the GUI and Calculations in Qt Application

I am writing a Qt application which does some calculations. I would like to separate in my project 2 parts: the part related to GUI and the part which is responsible for calculations. Could you recommend the best way to do so? Examples are appreciated.

My idea was to do it in main.cpp file:

int main(int argc, char *argv[])
{
    QApplication app(argc, argv); 

    MainWindow mw; // This is responsible for GUI
    mw.show();

    MainComputation mc; // This is responsible for calculations

    return app.exec();
}

I would need also to establish the connections between this two parts.

Upvotes: 2

Views: 379

Answers (2)

g19fanatic
g19fanatic

Reputation: 10931

You need to create your MainComputation class as shown here (mainly inherit from QObject, include the Q_OBJECT macro in your class declaration and label some methods as slots).

Then you will need to hook up signals and slots between your GUI elements signals (mouseClick, buttonPress, etc..., checkout each widgets available signals) and an instance of your MainComputation objects slots. This is done with the connect statement. Kinda like this

connect(mw.ui->btn,SIGNAL(clicked(bool)),&mc,SLOT(doSomething()));

There is a simple example with a lot of information available at the qt docs.

Upvotes: 1

Jepessen
Jepessen

Reputation: 12415

You can create a library with the GUI, another library with the calculation algorithms, and exchange data between them using QT signals&slots.

Upvotes: 1

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